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Which of the following activity shows th...

Which of the following activity shows the advantages of friction ?

A

Walking

B

Writing on balck board

C

Light a matchstick

D

All of the above

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The correct Answer is:
D
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ARIHANT PUBLICATION PUNJAB-MOVING THINGS PEOPLE AND IDEAS -CHAPTER EXERCISE
  1. If we keep a column of negligible weight having height 15 cm and area ...

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  2. On which of the following factor does the friction between a block kep...

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  3. Which of the following activity shows the advantages of friction ?

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  4. A scooter driver over an oily road generally slips because on the oily...

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  5. Which of the following is not true ?

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  6. The ball bearing are used in machinaries to reduce friction. Which typ...

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  7. Shape of aeroplane are defined to reduce

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  8. In which one of the following cases of motion are the distance moved a...

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  9. If the pressure over a liquid increase , its boiling point

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  10. The distance - time graph for the motion of two vehicles . A and B is ...

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  11. Which of the following is the correct increasing order of the rolling ...

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  12. A merry -go-round - is moving at a non - varying speed of 10 m/s . It...

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  13. Porters who carry heavy luggage always have a long piece of cloth with...

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  14. An object of mass 5 kg is sliding on a smooth frictionless horizontal ...

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  15. In the following table , the readings of an odometer at diffferent tim...

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  16. While going for a picnic a student notes the reading on the odometer o...

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  17. A rectangular container given below is filled with a liquid heavier th...

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  18. A solid rectangular block of iron is kept over the top of a table with...

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  19. The odometer reading of a moving car at 8.00 am is 36540 km and at 10....

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  20. Select the one which is different from the others in the manner it is ...

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